The Biscuit Eater(1972)

Overview:

Nothing warms the heart like the story of a boy and his dog. Lonnie (Johnny Whitaker) and Text (George Spell) are two friends determined, against all odds, to turn a misfit hound into a hero. Tennessee farmer and dog trainer Harve McNeil (Earl Holliman) tells his son Lonnie that his dog, Moreover, is a good-for-nothing "biscuit eater."